XML 89 R71.htm IDEA: XBRL DOCUMENT
v3.23.3

Commitments and Contingencies (Details Textuals) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Loss Contingency [Abstract] |  |  |
Liabilities for various claims, complaints and other legal actions | $ 858.9 | $ 729.1 | $ 577.5
Construction defect portion of loss contingency accrual | 97.00% | 99.00% |
Expenses related to legal claims | $ 139.7 | $ 138.0 | $ 72.4
Maximum amount deductible under workers compensation insurance policy | 0.5 |  |
Deductible policy amount per occurrence | 0.5 | 0.5 |
Estimated insurance recoveries related to legal claims | 165.8 | 137.9 |
Other Commitments [Abstract] |  |  |
Surety bonds | 3,200.0 |  |
Outstanding letters of credit | 254.3 |  |
Forestar Group [Member] |  |  |
Land and Lot Option Purchase Contracts [Abstract] |  |  |
Deposits | 139.1 |  |
Purchase Obligation | 1,300.0 |  |
Increase (Decrease) in Earnest Money Deposits Outstanding | 10.9 | 8.7 |
Increase (Decrease) in Prepaid Expenses, Other | 21.8 | $ 58.9 |
Other Commitments [Abstract] |  |  |
Outstanding letters of credit | 27.7 |  |
Home Building |  |  |
Land and Lot Option Purchase Contracts [Abstract] |  |  |
Deposits | 1,800.0 |  |
Purchase Obligation | 21,100.0 |  |
Home Building | Cash Deposits [Member] |  |  |
Land and Lot Option Purchase Contracts [Abstract] |  |  |
Deposits | 1,700.0 |  |
Home Building | Promissory notes and letters of credit [Member] |  |  |
Land and Lot Option Purchase Contracts [Abstract] |  |  |
Deposits | 119.4 |  |
Option Contracts Subject to Specific Performance Clauses [Member] | Forestar Group [Member] |  |  |
Land and Lot Option Purchase Contracts [Abstract] |  |  |
Purchase Obligation | 183.0 |  |
Option Contracts Subject to Specific Performance Clauses [Member] | Home Building |  |  |
Land and Lot Option Purchase Contracts [Abstract] |  |  |
Purchase Obligation | $ 226.3 |  |

X
- Definition The portion of the total reserve for legal claims that relates to the entity's construction defect matters, expressed as a percentage. + References No definition available. + Details
Name: | dhi_ConstructionDefectPortionOfLossContingencyAccrual
Namespace Prefix: | dhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Deductible policy amount per occurrence. + References No definition available. + Details
Name: | dhi_DeductiblePolicyAmountPerOccurrence
Namespace Prefix: | dhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Land and lot option purchase contracts. + References No definition available. + Details
Name: | dhi_LandAndLotOptionPurchaseContractsAbstract
Namespace Prefix: | dhi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum amount deductible under workers compensation insurance policy. + References No definition available. + Details
Name: | dhi_MaximumAmountDeductiblePerOccurrenceUnderWorkersCompensationInsurancePolicy
Namespace Prefix: | dhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition A deposit made by a purchaser of real estate to evidence good faith. It is customary for a buyer to give the seller earnest money at the time a sales contract is signed. The earnest money generally is credited to the down payment at closing, which is applied at closing as a component of payment against the purchase price. + References No definition available. + Details
Name: | us-gaap_EarnestMoneyDeposits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The increase (decrease) during the reporting period in the amount of deposits given by the reporting entity to a seller which shows that the prospective buyer is serious about purchasing a property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInEarnestMoneyDepositsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) of consideration paid in advance for other costs that provide economic benefits in future periods. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInPrepaidExpensesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. + References No definition available. + Details
Name: | us-gaap_InsuranceSettlementsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LossContingencyAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-10 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OtherCommitmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The noncurrent portion of the carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_SpecialAssessmentBondNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=dhi_ForestarGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=dhi_HomeBuildingOpsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dhi_TypesOfDepositsAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dhi_TypesOfDepositsAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_PerformanceGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |